How Fun Diving at Chang Diving Works – Step-by-Step (2025, Koh Chang)
Planning your fun dives on Koh Chang? At Chang Diving Center, we welcome certified divers from all agencies – whether you trained with SSI, CMAS, NAUI, SDI, PADI, RAID, or others.
Your certification is your passport to explore the underwater world with us!
Who Can Join Our Fun Dives?
If you hold a recognized scuba diving certification (Open Water Diver or higher) from any diving agency, you’re welcome to join our fun dives.
We accept certifications from organizations such as:
- PADI
- SDI / TDI
- SSI
- CMAS / VDST
- RAID
- NAUI and others
👉 Just bring your certification card (physical or digital) and a positive attitude!
Technical Diving on HTMS Chang Wreck
We also offer technical dives on the HTMS Chang wreck – the only dive site around Koh Chang where full technical penetration dives are truly rewarding.
A typical technical dive profile on the HTMS Chang includes:
- Bottom gas: EAN32 (Nitrox 32%)
- Travel gas: EAN40–45%
- Deco gas: EAN100 (pure oxygen)
- Bottom time: Approximately 120 minutes (depending on your gas planning and dive plan)
👉 Important: To participate in such extended technical dives, you must be a certified Technical Diver (e.g., TDI Decompression Procedures, Advanced Nitrox, or equivalent from recognized agencies).
Due to the complexity and longer duration of these dives, careful planning is required. Especially during the high season, it may not always be possible to organize technical dives alongside standard recreational trips.
🔵 Please contact us well in advance if you are interested in technical diving with us, so we can discuss possibilities, logistics, and safety.
We appreciate your understanding and look forward to supporting your technical diving adventure on Koh Chang!
How Many Dives Per Day?
Our standard dive trips include 2 boat dives per day.
We focus on quality over quantity – giving you plenty of bottom time, relaxed surface intervals, and a full experience at each site.
Each dive usually lasts around 50 to 60 minutes, depending on your air consumption, comfort, and diving conditions.
⭐️ Want to dive more? We offer a third dive on request every day!
When booking your fun dives, you can easily add an Extra Dive during the booking process on our website.
- Price for Extra Dive: 800 THB
- Example: 2 dives = 3,290 THB → with extra dive (3 dives total) = 4,090 THB
Please note: Adding a third dive depends on weather conditions and schedule, but we do our best to make it happen if requested!
Which Dive Sites Will We Visit?
Our daily dive trips visit the best sites around Koh Chang, including:
- HTMS Chang Wreck
- Hin Raab South
- Hin Luk Bat
- Blueberry Hill
- Secret Reef and more
The actual dive sites are selected based on weather conditions, group certification levels, and marine life opportunities.
👉 Check out our Dive Site Map.
⚓ Important Rules for Wreck Dives on HTMS Chang:
- To dive on the HTMS Chang Wreck you must be certified as Advanced Open Water Diver (AOWD) or higher.
- Open Water Divers may dive the wreck if they can show proof of at least 25 logged dives and previous deep diving experience.
- Penetration dives (inside the wreck) are only allowed for divers with both Deep Diver and Wreck Diver Specialty Certifications.
- Without a Wreck Diver Certification: No inside penetration – only outside exploration around the wreck.
Can You Guarantee Whale Sharks, Turtles, or Dolphins?
While Koh Chang is home to a rich variety of marine life, nature has its own plans. 🐋🐢🐬
We can never guarantee sightings of specific animals like whale sharks or turtles.
However, every dive is an adventure – and the ocean sometimes brings amazing surprises!
What About Weather Conditions?
We often get emails like “I’m coming in December – how’s the weather?” – sent in June! 😅
The truth is:
- December is usually part of Koh Chang’s dry season.
- Visibility and dive conditions are typically good, but the ocean is always dynamic and conditions can vary.
- Exact weather forecasts are only reliable a few days in advance.
Our team monitors weather and sea conditions daily to give you the safest and best diving experience possible.
👉 Check the latest local conditions here:
Koh Chang Weather Forecast 🔗
On our weather page, you’ll find:
- Wind speed and gusts (km/h)
- Wind direction
- Temperature (°C)
- Cloud cover and rainfall (mm/h)
- Air pressure (hPa) and humidity (%)
- Wave height, wave period, wave direction, and swell information
- And much more!
Daily Schedule – Step-by-Step
- 07:15–07:45 AM: Hotel pickup
- 08:15 AM: Departure of our dive boat (Pirm Udom Sub)
- Morning: First dive at selected dive site
- Surface Break: Relax on board with fruits, water, and soft drinks
- Lunch:
- On standard 2-dive days: Lunch is served between the two dives during the surface interval.
- On 3-dive days: Lunch is served between the second and third dive.
- Late Morning / Early Afternoon: Second dive (or third dive if booked)
- 1:00–4:00 PM: Return to Klong Prao Beach (depending on conditions and number of dives)
What’s Included in Fun Dives?
- 2 or 3 boat dives with a professional dive guide (depending on your booking)
- High-quality rental equipment (or tank & weights if you have your own gear)
- Water, soft drinks, fresh fruits, and a small lunch on board
- Hotel pickup and return (in standard areas)
- Small groups for more fun, safety, and relaxed diving
- Optional: Dive accident insurance available for extra safety –
Learn more about dive insurance
Fun Dive Prices 2025
2 dives (full equipment): starting from 3,290 THB per person
Check the latest details and packages here:
Fun Dive Booking Page 🔗
⚠️ Prices are subject to change without prior notice.
Ready to Dive Koh Chang?
Secure your fun diving spot easily online:
How to book your dive adventure:
- 👉 Choose your dive option or package
- ➕ Add extra dives if you like (only 800 THB per dive)
- 📅 Select your preferred starting date
- 🛒 Add more products if you wish (courses, rental gear, etc.)
- ✅ Proceed to checkout and confirm your booking
Frequently Asked Questions (FAQ)
- Can I dive if my certification is from a different agency?
Yes, we accept certifications from all recognized organizations. - Can I dive alone if I have my buddy?
We keep it personal: small groups with a maximum of 5 divers per guide – or private guides are available on request.Experienced buddy teams are welcome to explore the dive site independently after the dive briefing.
Certified solo divers with proper equipment are also allowed to dive solo.
- Is it possible to do 3 dives a day?
In special cases, yes – but it must be requested and confirmed in advance. - Do you offer Nitrox?
Yes! Nitrox is available upon request for certified divers (additional fee applies). - Do you offer dive insurance?
We recommend adding optional dive insurance for extra safety.
Learn more about Dive Insurance. - Can non-divers join on the boat?
Yes, we offer snorkeler or boat rider options – subject to availability.
What Our Guests Say About Us
At Chang Diving Center, we’re proud to have earned the trust and admiration of divers from around the world.
Their reviews highlight the passion and professionalism we bring to every dive, and we’re excited to share their thoughts with you!
Google Reviews
Guests love our professionalism, safe diving practices, and the beauty of Koh Chang’s dive sites. See why we’re a top-rated center!
Tripadvisor Reviews
On Tripadvisor, travelers highlight our friendly atmosphere, personalized diving experiences, and dedication to creating unforgettable adventures.
Facebook Reviews
Our Facebook community is filled with stories of happy divers sharing their unforgettable moments. Join the conversation and see for yourself!
Your feedback inspires us to continue providing world-class diving experiences. Thank you for being part of our journey!
Book your diving adventure!
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Be safe wherever you dive. Get your own safe and clean personal diving equipment that you can trust for all your diving adventures around the blue planet! We got it!

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